Submission #1275898

#	Time	Username	Problem	Language	Result	Execution time	Memory
1275898		Leyna	Friend (IOI14_friend)	C++20	19 / 100	1 ms	580 KiB

friend

#include "friend.h"
#include <bits/stdc++.h>

using namespace std;

vector<int> take, not_take;
vector<vector<int>> children;

void dfs(int u, int confidence[]){
	take[u] += confidence[u];
	for (int v : children[u]){
		dfs(v, confidence);
		take[u] += not_take[v];
		not_take[u] += max(not_take[v], take[v]);
	}
}

// Find out best sample
int findSample(int n,int confidence[],int host[],int protocol[]){
	children.resize(n);
	for (int i=1; i<n; i++){
		children[host[i]].push_back(i);
	}
	take = not_take = vector<int>(n);
	dfs(0, confidence);
	return max(take[0], not_take[0]);
}

• Subtask 1: 0 / 11
• Subtask 2: 0 / 8
• Subtask 3: 0 / 8
• Subtask 4: 19 / 19
• Subtask 5: 0 / 23
• Subtask 6: 0 / 31